EROI for the production of methane from hydrates by hot water injection

Callarotti, Roberto Cesare

doi:10.2495/ht120191

Cited by 2 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among those techniques, Callarotti (2011) estimated EROI of the thermal stimulation with electric heating using analytical solutions and obtained as in the range of 4-5 without considering the efficiency of power generation. For the hot water injection, the estimation of EROI by Callarotti (2012) began at a value of 28 as the water starts flowing and reduced to a value of 2.8 after fifty years of production. Alternatively, if the reservoir pore pressure can be dropped by displacing water from the reservoir to the surface through a borehole, the phase equilibrium temperature of the gas hydrate and vapor methane is dropped, and explicit heat between the original formation temperature and phase equilibrium temperature (ΔT T 0 −T eq (P′), where T eq (P′) is the phase equilibrium temperature after depressurization from the original pressure P 0 to P′) can be used for the gas production.…”

Section: Heat Demand and Output By Gas Production Methods Production Techniques And Theoretical And Laboratory Evaluationmentioning

confidence: 99%

Review of Energy Efficiency of the Gas Production Technologies From Gas Hydrate-Bearing Sediments

Yamamoto¹,

Nagakubo²

2021

Front. Energy Res.

View full text Add to dashboard Cite

Even in the carbon-neutral age, natural gas will be valuable as environment-friendly fuel that can fulfill the gap between the energy demand and supply from the renewable energies. Marine gas hydrates are a potential natural gas source, but gas production from deposits requires additional heat input owing to the endothermic nature of their dissociation. The amount of fuel needed to produce a unit of energy is important to evaluate energy from economic and environmental perspectives. Using the depressurization method, the value of the energy return on investment or invested (EROI) can be increased to more than 100 for the dissociation process and to approximately 10 or more for the project life cycle that is comparable to liquefied natural gas (LNG) import. Gas transportation through an offshore pipeline from the offshore production facility can give higher EROI than floating LNG; however, the latter has an advantage of market accessibility. If the energy conversion from methane to hydrogen or ammonia at the offshore facility and carbon capture and storage (CCS) can be done at the production site, problems of carbon dioxide emission and market accessibility can be solved, and energy consumption for energy conversion and CCS should be counted to estimate the value of the hydrate resources.

show abstract

Section: Heat Demand and Output By Gas Production Methods Production Techniques And Theoretical And Laboratory Evaluationmentioning

confidence: 99%

Review of Energy Efficiency of the Gas Production Technologies From Gas Hydrate-Bearing Sediments

Yamamoto¹,

Nagakubo²

2021

Front. Energy Res.

View full text Add to dashboard Cite

show abstract

Microwave Dielectric Properties of Heavy Oil and Heating of Reservoirs

Callarotti

Páez

2014

Day 2 Tue, June 10, 2014

View full text Add to dashboard Cite

We have measured the electromagnetic high frequency (~5 GHz) response of heavy oil (API density ~10). The measurements were obtained for oil samples enclosed in high purity quartz vials located in an aluminum cylindrical resonator excited at the TE011 mode by means of microwaves. The oil relative real permittivity e' is found to be of the order of 2.3 with a loss tangent ranging from 0.0005 to 0.00006 depending on the frequency and the oil sample. We model the heating of reservoirs located at depths of the order of 1000 meters, excited through a cylindrical waveguide (a 6 inch diameter production pipe or a coiled tubing) excited in the TE01 mode. We discuss why this mode was selected and we analyze the attenuation due to various modes in cylindrical waveguides. The reservoirs considered have variable thicknesses (of the order of several meters). We present results for oil having the permeability of free space, and relative permittivities in the range from e = 2.3-j0.001, to e = 2.3-j0.01. The losses in the metallic circular waveguide walls reduce the surface applied power of 1 Kw to some 200 watts at the top of the reservoir and the mismatch between the empty and the filled waveguide further reduces the applied power due to the impedance mismatch. The power absorbed by the oil in the reservoir increases the temperature in the range of 8 to 20 C. This increase would certainly decrease the oil viscosity, favoring an easier production, but is far too small to cause any upgrading process. We include a discussion of the EROI factor (energy return on energy input) associated with electrical heating of oil reservoirs at low (60 Hz) frequencies and for the high frequency microwave heating process described.

show abstract

EROI for the production of methane from hydrates by hot water injection

Cited by 2 publications

References 9 publications

Review of Energy Efficiency of the Gas Production Technologies From Gas Hydrate-Bearing Sediments

Review of Energy Efficiency of the Gas Production Technologies From Gas Hydrate-Bearing Sediments

Microwave Dielectric Properties of Heavy Oil and Heating of Reservoirs

Contact Info

Product

Resources

About